Fig. 5.

Changes ($\text{mean}\pm \mathrm{SE}$ of $n=6$ measurements) relative to in vivo (IV) values of FAD ${\tau }_m$ (a), ${\tau }_1$ (b), ${\tau }_2$ (c), and ${\alpha }_1/{\alpha }_2$ (d) observed from both the spinosum (diamond) and basal (square) epithelial layers of tissues maintained in live culture for 48 h. ${\tau }_m$ is mean lifetime (${\tau }_1*{\alpha }_1+{\tau }_2*{\alpha }_2$). Asterisk denotes significant difference between in vivo and indicated measurement ($*p<0.05$, $**p<0.01$).